Cited by 31Hypothalamic control of reproductive hormonesNeuropeptides and Animal PhysiologyNeuroendocrine regulation and behavior

Expression and actions of GnIH and its orthologs in vertebrates: Current status and advanced knowledge

Ullah, Rahim, Shen, Yi, Zhou, Yu-dong, Huang, Ke, Fu, Jun-fen, Wahab, Fazal, Shahab, Muhammad·2016·Neuropeptides

Abstract

The physiology of reproduction is very complex and is regulated by multiple factors, including a number of hypothalamic neuropeptides. In last few decades, various neuropeptides have been discovered to be involved in stimulation or inhibition of reproduction. In 2000, Tsutsui and colleagues uncovered gonadotropin-inhibitory hormone (GnIH), a neuropeptide generating inhibitory drive to the reproductive axis, in the brain of Coturnix quail. Afterward, GnIH orthologs were discovered in other vertebrates from fish to mammals including human. In these vertebrates, all the discovered GnIH and its ortholgs have LPXRFamide (X=L or Q) sequence at C-terminus. GnIH orthologs of mammals and primates are also termed as RFamide-related peptide (RFRP)-1 and -3 that too have an LPXRFamide (X=L or Q) motif at their C-terminus. GnIH and its orthologs form a member of the RFamide peptide family. GnIH signals via its canonical G protein coupled receptor 147 (GPR147). Both GnIH and GPR147 are expressed in hypothalamus and other brain regions. Besides actions through the hypothalamic GnRH and kisspeptinergic neurons, GnIH-GPR147 signaling exerts inhibitory effect on the reproductive axis via pituitary gonadotropes and directly at gonadal level. Various factors including availability and quality of food, photoperiod, temperature, social interaction, various stresses and some diseases modulate GnIH-GPR147 signaling. In this review, we have discussed expression and actions of GnIH and its orthologs in vertebrates. Special emphasis is given on the role of GnIH-GPR147 signaling pathway in the regulation of reproduction. We have also reviewed and discussed currently available literature on the participation of GnIH-GPR147 signaling pathway in the stress modulation of reproduction.

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Crossref · 10.1016/j.npep.2016.05.004

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  • In vertebrate models, stress-induced glucocorticoids repress the HPG axis by inhibiting GnRH neurons or stimulating neurons releasing GnIH.

    “In vertebrate models, stress-induced glucocorticoids repress the HPG axis by inhibiting GnRH neurons or stimulating neurons releasing gonadotropin-inhibitory hormone (GnIH) [89–91].”

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Authors
Ullah, R., Shen, Y., Zhou, Y.-D., Huang, K., Fu, J.-F., Wahab, F., & Shahab, M.
Affiliations
  • Quaid-i-Azam University (PK)
  • Zhejiang University (CN)
  • German Primate Center (DE)
Corresponding author
Shahab, Muhammad
Venue
Neuropeptides
Publisher
Elsevier BV
Published
2016-10
Volume
59
Pages
9-20
ISSN
0143-4179 (ISSN-L)
OpenAlex
W2399658045
Cited by
30
References
156
Citations by year
2026: 1 · 2025: 3 · 2024: 1 · 2023: 3 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 4 · 2018: 5 · 2017: 3 · 2016: 2
FWCI
0.66
Type
journal article
Language
en
Open access
closed
Locations
  • Neuropeptides (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Quaid-i-Azam University Research Fund
  • Higher Education Commission of Pakistan
  • National Natural Science Foundation (81570759, 81270938)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords
gonadotropin-inhibitory hormone, RFamide-related peptides, RFRP-3, GPR147, hypothalamic neuropeptides, kisspeptin, GnRH neurons, gonadotrophs, photoperiod, food availability, vertebrate reproduction
MeSH terms
Animals, Coturnix, Female, Humans, Hypothalamic Hormones, Hypothalamus, Neurons, Neuropeptides, Pituitary Gland, Reproduction, Signal Transduction

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